Mpempe akwụkwọ nkọwapụta ngwaahịa Bisphenol A/BPA Bisphenol A (BPA)
Nchịkọta Ngwaahịa
Nchịkọta Ngwaahịa
Aha Ngwaahịa: Bisphenol A (Mkpirisi: BPA)
Usoro Kemịkalụ: C₁₅H₁₆O₂
Nọmba CAS: 80-05-7
Nọmba EINECS: 201-245-8
Ngwaahịa Ngwaahịa: Oleochemicals; Ngwakọta Sịntetik Organic
Ọdịdị: Kristal ọcha dị ka agịga ma ọ bụ ntụ ntụ ọcha dị mma (ọkwa ụlọ ọrụ nwere ike iyi dị ka ihe siri ike granular)
Njirimara Anụ ahụ na Kemịkalụ
| Akụ na ụba | Nkọwapụta |
|---|---|
| Ibu Molekụla | 228.29 g/mol |
| Ebe Mgbaze | 158–159 Celsius (316–318 Celsius) |
| Isi Mmiri | 220 °C (428 °F) na 4 mmHg (ọnọdụ vacuum) |
| Njupụta | 1.195 g/cm³ (25 °C) |
| Mmiri na-agbaze | A naghị agbaze n'ime mmiri; a na-agbaze n'ime ihe mgbaze organic (dịka ọmụmaatụ, ethanol, acetone, benzene, toluene, na ethyl acetate) |
| Ebe mgbari | 227°C (iko mechiri emechi) |
| Ịkwụsi ike | Ọ na-adị mma n'okpuru okpomọkụ na nrụgide nkịtị; ọ na-enwe mmetụta na ìhè ultraviolet (UV) (nwere ike imebi ma ọ bụ gbanwee agba ya ma ọ bụrụ na ọ na-apụta ruo ogologo oge na UV); zere ịkpọtụrụ ihe ndị na-eme ka oxidative, asịd, na alkalis siri ike |
Ngwa Isi
Bisphenol A bụ ihe dị mkpa n'imepụta polymers na ihe ndị e ji arụ ọrụ nke ọma, yana ihe ndị a dị mkpa maka ojiji:
Mmepụta plastik Polycarbonate (PC)
Dịka ihe bụ isi e ji emepụta plastik PC, BPA na-enye ohere imepụta ngwaahịa ndị na-anaghị emebi emebi, ndị na-anaghị ekpo ọkụ dịka ebe e ji ihe eletrọnịkị rụọ (laptọọpụ, ekwentị mkpanaaka), ihe ndị e ji ụgbọala rụọ (mkpuchi ọkụ ihu, panel ime), na ihe ndị e ji eri nri eme (nke a na-ahazi maka nchekwa n'ọtụtụ mpaghara).
Njikọta Epoxy Resin
A na-eji ya emepụta resin epoxy maka mkpuchi (dịka ọmụmaatụ, ihe mkpuchi dị n'ime karama, ihe mkpuchi mgbochi ire ere ụlọ ọrụ), ihe mgbakwunye (ihe mgbakwunye siri ike maka ikuku na owuwu), yana ihe mkpuchi eletriki (bọọdụ sekit, winding transformer).
Ojiji ndị ọzọ nke ụlọ ọrụ mmepụta ihe
Ihe eji emepụta polyether polyols (eji mee ụfụfụ polyurethane).
Ihe mgbakwunye na ihe ndị na-eme ka plastik dị nro, ihe ndị na-egbochi ire ọkụ, na ihe ndị na-eme ka UV sie ike maka ihe ndị e ji eme polymer.
Ọ dị n'etiti mmepụta nke kemịkalụ pụrụ iche (dịka ọmụmaatụ, antioxidants, agba).
Ụkpụrụ Ịdị Mma
Ngwaahịa Bisphenol A anyị na-agbaso ụkpụrụ ụlọ ọrụ na nchekwa zuru ụwa ọnụ, yana ihe ngosi njikwa ịdị ọcha na adịghị ọcha dịka ndị a:
| Ndepụta Ndekọ | Ọkwa ụlọ ọrụ mmepụta ihe (Nkịtị) | Ọkwa Reagent (Ọcha Dị Elu) |
|---|---|---|
| Ịdị ọcha (HPLC) | ≥ 99.5% | ≥ 99.8% |
| Ọdịnaya Mmiri | ≤ 0.1% | ≤ 0.05% |
| Ọdịnaya ntụ | ≤ 0.01% | ≤ 0.005% |
| Ihe Na-adịghị Mma nke Metal Dị Oké Ọkụ (Pb, Cd, Hg) | ≤ 10 ppm | ≤ 1 ppm |
| Ihe fọdụrụ na Phenol | ≤ 0.2% | ≤ 0.05% |
Nkọwapụta ahaziri ahazi dị maka mkpa ụlọ ọrụ mmepụta ihe ụfọdụ (dịka ọmụmaatụ, ọkwa adịghị ọcha maka mmepụta ihe ndị e ji aka kpụọ nri).
Ntuziaka Nchekwa na Njikwa
Iji hụ na ngwaahịa kwụsiri ike na nchekwa ọrụ, soro ihe ndị a chọrọ maka nchekwa na njikwa:
Ọnọdụ Nchekwa
Okpomọkụ: Debe n'ebe dị jụụ ma kpọọ nkụ na 15–25 Celsius; zere oke okpomọkụ (>30 °C) ma ọ bụ oyi (
Ọkụ: Jiri ihe ndị na-adịghị acha ọcha (dịka ọmụmaatụ, karama iko aja aja, drum plastik HDPE nwere nchekwa UV) iji gbochie mmebi UV kpatara.
Iru mmiri: Nọgide na-enwe iru mmiri dị ala karịa 60%; tinye ihe na-ekpo ọkụ (silica gel, calcium chloride anhydrous) n'ime ihe ndị a iji zere ịcha ihe.
Ihe achọrọ maka mkpuchi
Debe akpa ndị ahụ nke ọma mgbe ejiri ya mee ihe ọ bụla iji gbochie mmiri ịbanye na mmetọ. Zere iji usoro mkpuchi nwa oge (dịka ọmụmaatụ, mkpuchi plastik) nke nwere ike ibute mmetọ.
Ihe Mgbochi Nchedo
Yiri ihe nchekwa onwe onye (PPE): Ihe mkpuchi uzuzu, uwe aka na-eguzogide kemịkal, na enyo nchekwa mgbe ị na-ejikwa ya (karịsịa maka ụdị ntụ ntụ/ntụ ntụ).
Ikuku ikuku: Hụ na ikuku na-efe nke ọma n'ebe a na-echekwa ihe na ebe a na-ejikwa ya iji zere uzuzu ma ọ bụ uzuoku.
Njikwa Nwụfu: Jiri ihe ndị na-amịpụta ihe na-adịghị arụ ọrụ hichaa ihe ndị na-awụfu mmiri (ala diatomaceous, carbon activated); tụfuo ihe mkpofu dịka iwu kemịkalụ dị ize ndụ si dị.
Nrubeisi Iwu
Mmachi zuru ụwa ọnụ: Na-agbaso iwu EU REACH (Annex XVII) gbasara BPA n'ihe ndị e ji eri nri (dịka ọmụmaatụ, amachibidoro ya n'ime karama inye ụmụ ọhụrụ nri).
Ụlọ ọrụ FDA nke mba Amerịka: Na-emezu ntuziaka FDA maka ojiji BPA na mkpuchi nri na plastik (21 CFR 175.300).
Ụkpụrụ China: Na-agbaso GB 4806.6 (ụkpụrụ nchekwa maka resin plastik ndị a na-akpọtụrụ nri).
Nkwakọ ngwaahịa na ndụ nchekwa
Nhọrọ Nkwakọ ngwaahịa:
Ọkwa Ụlọ Ọrụ: Akpa plastik HDPE nke kilogram 25 (nwere ihe mkpuchi polyethylene dị n'ime) ma ọ bụ drum eriri 500 kg (eji foil aluminom kpuchie ya).
Ọkwa ihe eji eme ihe: 1 kg karama iko amber (eji mkpuchi Teflon kpuchie ya).
Ndụ Nchekwa: ọnwa iri abụọ na anọ site na ụbọchị mmepụta (mgbe echekwara ya dịka ọnọdụ ndị dị n'elu si dị, emepebeghị ya).
Fọm Nnyocha Ogo maka Bisphenol A
| Onye nyocha | Ngalaba | Nkọwapụta | Nsonaazụ | Usoro Nnwale |
| Ọdịdị | / | White granular ma ọ bụ flaky, Na-enweghị ihe ndị na-adịghị ọcha n'ime ígwè | White granular, Na-enweghị ihe adịghị ọcha n'ime ígwè | GB/T 28113-2011 |
| Bisphenol A | Na/% | ≥99.85 | 99.925 | GB/T 28113-2011 |
| Fenol | Na/% | ≤0.005 | 0.001 | GB/T 28113-2011 |
| 2,4-Isomer | Na/% | ≤0.050 | 0.01 | GB/T 28113-2011 |
| Isi kristal | °C | ≥156.6 | 157.2 | GB/T 28113-2011 |
| Chroma a kpụrụ akpụ | Agba, Pt-Co (Usoro Hazen) | ≤20 | 10 | GB/T 28113-2011 |
| Ngwọta Chroma | Agba, Pt-Co (Usoro Hazen) | / | 5 | GB/T 28113-2011 |
| Mmiri mmiri | Na/% | ≤0.08 | 0.02 | GB/T 6283-2008 |